[100390] in RedHat Linux List
MX secondary, dns and sendmail - what's wrong?
daemon@ATHENA.MIT.EDU (Drew Mouton)
Fri Nov 20 10:31:58 1998
Date: Fri, 20 Nov 1998 09:30:46 -0600
From: Drew Mouton <drew@etool.com>
To: "Red Hat List" <redhat-list@redhat.com>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
Hey All,
Maybe someone can point me in the right direction, 'cause I can't see it.
Our upstream ISP has been listed as a secondary mail forwarder for a few
years, but they've caused us enough probs that I'm taking it in
house...but I config'd something wrong and I'm not sure what it is.
First, our dns is like this (this is a pre-BIND8 config file):
mydomain.com IN MX 10 serverA.mydomain.com;
mydomain.com IN MX 20 serverB.mydomain.com;
I've checked and this ISN'T a DNS-propagation problem. I've also gone
over my sendmail.cf for correctness.
Two probs: in the cases where I have a user "Drew" on both serverA AND
serverB, I'm getting some mail delivered locally on serverB (when it
should be forwarded to serverA). Other messages seem to be getting lost
altogether.
Secondly, some of our domains are being refused altogether by serverB,
when they should be forwarded to serverA for local delivery.
What I'm trying for here is for serverB - as a backup - to relay all our
mail to serverA, but ONLY our various domains, and to refuse to relay
messages to other outside domains (we've had a prob with scammers using a
couple of our servers for relaying spam).
Anyone see what I'm missing?
Thanks - Drew
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